<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2021/11/25
 * Time: 10:30
 */


echo abs('-111');
echo '<br>';
echo ceil(3.14);
echo '<br>';
echo floor(3.14);
echo '<br>';
echo round(3.14159,2);
echo '<br>';
echo max(5,6,3);
echo '<br>';
echo min(5,3,5,2);
echo '<br>';
echo rand(2,5);
echo '<br>';
echo $nowtime=time();
echo '<br>';
echo date('Y-m-d H:i:s');
echo '<br>';
echo strtotime('2021-08-31 09:30:30');
echo '<br>';
if(!defined('APP')){
    define('APP',"nishiyis");
}
echo APP;

